How to Bore for a New Door Knob | Ask This Old House

Ask This Old House general contractor Tom Silva helps a homeowner install a new passage set door knob on his closet door
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Time: 1 hour

Cost: $90

Skill Level: Easy

Tools List for Boring for a New Door Knob:
Drill/Driver
2 1/8” Hole Saw
1” Hole Saw
Hole Saw Jig
Screwdriver
Chisel
Pencil

Shopping List:
Passage Set

Steps:
1. Place the hole saw jig on the door. Position it three feet off the ground. Set the backset measurement to either 2 3/8” or 2 _”, depending on the style of the door and personal preference.
2. Use a drill/driver with the 2 1/8” hole saw to bore a hole through the door. Once the center bit is through the door, stop. Bring the hole saw the other side of the door and finish the bore.
3. Use the 1” hole saw to bore a hole through the edge of the door to create an area for the latch.
4. To make room for the latch plate, place the latch plate on the edge of the door and draw an outline. Use a chisel to remove the wood inside the outline. Seat the latch plate into the edge to make sure it fits properly.
5. With the latch plate seated, install it using screws and a screwdriver.
6. Install the door knobs to the front and the back of the door. Line up both pieces and attach them through the latch. Use screws and a screwdriver to fix them in place.
7. If necessary, mortise out the jamb for the striker plate. Outline the plate and line it up with the striker. Use a chisel to mortise the outline.
8. Use screws and a screwdriver to attach the striker plate.

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Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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How to Bore for a New Door Knob | Ask This Old House
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